MATH 115 Review Chapter 1-2
Elementary Algebra, 9th. Edition, by Kaufmann and Schwitters
Answers:
1. Simplify
4  (2)  (6)  (9)  2
1. ____________
2. Simplify
10  3(6  2)  35  5
2. _____________
3. Find the least common multiple of 15 and 24.
3. _____________
4. Evaluate 0.2 x  0.3 y  xy when x  0.1 and y  0.2
4. _____________
5. Evaluate 2 x 3  y 2 when x  2 and y  3
5. _____________
For problems 6-10, perform the indicated operation and express the answer in simplest form:
1 2 5
 
6.
6. ____________
8 3 24
7.
F
I
G
H JK
5
10
 
6
3
7. ____________
1
8.
3
16 x 2

14x y 12 x y
8. ____________
9.
8
9
 2
5 x 3x
9. ____________
5ab IF
12b I
F
G
J
G
H6 KH5a J
K
4
10.
11. Express
12. Simplify
10. ____________
50 x 3 y 4
in simplest form.
125xy 2
 5 3
 16  8 


11. ____________
2
12.____________
13. Simplify – 15 + (– 3) + 7 – ( – 11)
13. ____________
14. Simplify ( – 5)( – 2)( – 6)
14 ____________
2
2
1
2
15. Simplify 4    9  
2
3
2
15.____________
16. Translate the following into an algebraic expression
“five less than three times x”
16. ___________
17. John has n nickels, d dimes, and q quarters. How much money,
in cents, does she have?
17. ____________
18. Jane is y years old and her sister is ten years older than Jane.
What represents the sum of their ages?
18. ____________
19. Find the value of (3)3 and 2 2
19. ____________
20. Express 153 as a product of prime factors.
20. ____________
3